GIT导出差异版本更新的文件列表

# 找出差异文件
git diff commitId1 commitId2 --name-only


#将差异文件打包
git diff commitId1 commitId2 --name-only | xargs tar -czvf ../update.tar.gz
or
git diff commitId1 commitId2 --name-only | xargs zip update.zip